Door-check.



Patented July I8, 1899.

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m. 629,241. Patanted July 18, I899.

D. F. HANINGTON.

DOOR CHECK.

(Application filed Oct. 1a, 1398. Y

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UNITED "STATES PATENT UFFICE.

CnARLEs r. I-IANINGTON, on NEW YORK, N. Y., AssIeNoR TO THE MECHANICAL noon HINGE CHECK COMPANY, on sAME PLACE.

DOOR-CHECK.

SPECIFICATIONforming part of Letters Patent No. 629,247, dated July 18, 189%).

Application filed October 19, 1898. $erial lilo- 693,980. (life model.)

To all whmn it may concern:

Beit known that LCHARLES F. HANI NGTON, a citizen of the United'States, residingin the fulimprovements in mechanical door-checks;

and the object of the invention is to simplifyv the construction and improve the operation of such devices.

In carrying out my invention I provide a hinge of any'suitable type having two leaves and a barrel-and combine therewith mechanical checking devices which will be simple in construction, effective in operation, durable in use, capable of being easily reached for purposes of repair, and wherein when desired the checking action may be discontinued.

The type of deviceto which my invention particularly relates is that shown and described in my Patent No. 601,830, dated April 5, 1898, and the present improvements are de-' signed to simplify the construction and improve the operation of that device.

In order that my invention may be better understood, attention is directed to the accompanying drawings, forming part of this specification, in which- Figurel isa side elevation, partly in section, of an ordinary door-hinge equippedwith my present invention, the hinge being represented in a closed position; Fig. 2, a similar View showing the two leaves separated at an angle of ninety degrees; Fig. 3, a horizontal sectional view on theline 3 30f Fig. 1, showing the position of the hinge when the .door is entirely open; Fig. 4, a view similar to Fig. 3, illustrating the position of the parts when the hinge has been closed to the checking position; Fig. 5, a perspective view of thechec'k- I pawl and the locking-dog carried thereby; Fig. 6, a sectional viewthrough the checkpawl, illustrating the latch for the locking. dog; Fig. 7, a side elevation, partlyin section,

of a modification illustrating the hinge-leaves in an open position and in dotted lines the tripped; Fig. 8, a section on the line 8 8 of positionof the checking-pawl after it has been Fig. 7, Fig.9, a section on the line 9 9 of Fig.

7; Fig. 10, a section on the line 10 10 of Fig. 7, and Fig. 11 a detail viewof a further modification;

In allofthe above views corresponding parts are represented by the same numerals of reference.

1 is a hinge-barrel,and 2 3 are the two leaves. One of such leaves is secured to the frame of the doorway or jamb, and the other leaf is secured to the door. In the drawings I illustratc the barrel 1 as being carried with the leaf 3, and I illustrate the leaf 2 as being pivoted upon the ordinary pintle 3, (see Fig. 4,) which is mounted in said barrel. Carried by the barrel is a sleeve 4, in which is formed a slot 5, at the end of which slot isa shoulder 6, upon which is imposed the checking thrust or strain. The collar 4 is secured fo'the pintle or barrelin any suitable way, as by screws 7. Extending parallel with the'slot 5, above the shoulder 6, is a shorter slot 8, which communicates with slot 5 and is provided above and in front of the shoulder 6 with a curved cam-surface 9. It will be understood 11, formed in said leaf, andupon a sufficiently heavy screw12. A small leaf-spring 13 bears beneath the locking-pawl 10 and normally tends to elevate the same. Secured to the leaf 2 and in engagement with the locking pawl 10 isa checking-spring l4,which in this instance is a le'af-springsecured, to said leaf by the screws 15 and 16, the latter working in a slotted opening 17, soas to allow for slight movement of said spring when the latter is bowed at its center. The checkingpawl 10 is capable of movement within the recess 11 and parallel withthe spring 14. Said checking-pawl is also capable of movement outward from the hinge-leaf 2 against the tension of the spring 14, and to allow of this movement the said checking-pawl 10 is some what loosely mounted on the pivot 12, as will be understood. In order to lock the pawl 10 in a normally-depressed position,.so as to cause it to engage the shoulder 6 when the leaves of the hinge are brought together, I provide (in the form of device shown in Figs. 1 to 6) alocking-dog 18, which is carried by said pawl in a recess 19, formed on the under side thereof. This locking-dog is mounted on a small pivot 20 and is provided with a projecting finger 21,which engages in a recess 22, (see Figs. 3 and 4,) formed on the inner side of the spring 14. When the locking-dog 18 is thus engaged in the recess 22, its inner end 23 extends outwardly with respect to the face of the checking-pawl 10, so that when the two leaves of the hinge are moved relatively thereto the rear end 23 of the lockingdog will engage the shoulder (5 before the checking-pawl engages said shoulder, whereby the finger 21 will be disengaged from the recess 22 to unlock the checking-pawl 10.

In order to reset the locking-dog 18 when the hinge is again opened and to cause the finger 21 to again engage the recess 22 to lock the checking-pawl 10 in its depressed position, I provide a pin 24, which extends, diametrically through the barrel and pint/1e, as shown in Fig. 4, and which is arranged in the path of movement of the inner end of the locking-dog 18. This pin 24 is formed on the end of a screw 25, having a milled thumbhead 26, by which the said pin may be with drawn out of the path of movement of the locking-dog when it is not desired to reset the same and when achecking action is to be avoided. In order to secure t-helocking-dog 18 in its operative position to maintain the checking-pawl 10 normally depressed, I prefer to make use of a small latch 27, (see Fig. 6,) carried in a chamber 28 in the checkingpawl and normally pressed outward by the spring 29 to engage a recess 30 in the lockingdog 18. If desired, the operative parts of the check may be concealed by a casing 31, secured to the barrel 2 by small screws 32 and provided with a slot 33 therein, in which slot may work the inner end of the checking-pawl, as will be understood. To reset the checkingpawl after the same'has been moved upward by the spring 13 by the engagement between said pawl and cam-surface 9, I prefer to form the inner end of said pawl where the same engages with said cam-surface with a beveled or curved portion 34, by reason of which a smooth engagement will be secured in theresetting operation.

The operation of the device is as follows: Normally the inner end of the checking-pawl 10 will work in the slot 5, the said pawl being locked in a depressed position against the tension of the spring 13 by the engagement of the finger 21 of the locking-dog 18 with the recess 22 in the checking-spring 14. \Vhen the door is closed by hand or by a suitable spring device, the two leaves 2 and 3 will be moved almost together, so as to first engage the rear side of .the locking-dog 18 with the shoulder 6 to disengage the finger 21 from the recess 22,and thereby free the checking-pawl. Before the spring 13 can force the checkingpawl 10 upward, however, into the slot 8 the rear end of the checking-pawl 10 will have engaged the shoulder 6, and the friction thus produced between those parts will prevent upward movement of the pawl. This en gagement between the inner end of the checkingpawl and the shoulder 6 takes place immediately before the door is closed, and the strain will be thus thrown upon the checking-spring 14, which will be caused to buckle outward at its center by the slight movement of the checking-pawl against the spring. An elastic checking action is thus secured. When the doorhasrebounded,the inner end of the checkin g-pawl 10 will be disengaged from the shoulder 6 to relieve the friction between the two, and the spring 13 will then immediately elevate the said pawl and cause its inner end to work in the slot 8 to thus allow the leaves to engage together, as shown in Fig. 1, and to allow the door to close. Then the door is reopened, the inner end of the checking-pawl will engage the cam-surface 9 and said pawl will be moved downward into the slot 5. Immediately thereafter the inner end of the lockingdog 18 will engage the end of the pin 24 to cause the finger 21 to again enter the recess 22 and lock the pawl 10 in its depressed normal position. At the same time the latch 27 will engage the recess 30 in the lockingdog, so that the latter will also be locked in its normal position ready for a further checking operation.

\Vhen it is desired that the checking action should not take place, the thumbscrew 26 is withdrawn with the pin 24 from the path of movement of the locking-dog 18. When this is done, it will be seen that the locking-dog 18 will not be reset upon the opening of the door, so that when the door closes there will be no engagement between the pawl 19 and the shoulder 6, since the spring 13 will have elevated the pawl into line with the slot 8 before such engagement can take place.

Instead of making use of a locking-dog carried by the checking-pawl as described a sepa rate locking device may be used, as shown in Figs. 7 to 10, which will be preferable, since.

it may be made much larger and stronger without in any way affecting the compactness of the device. \Vith this form of my device the checking-pawl is pivoted to the leaf 2, bearing against the checking-spring, with its free end working in the slots 5 and 8, engaging the shoulder'G, and being reset by the cam-surface J, as heretofore.

. A separate locking-lever 3a is em ployed, pivoted on the leaf 2 by a screw 35 and engaging the locking-pawl on the other side from the checking-spring. For this purpose the leaf is cut entirely through at 36,. and the checking-pawl works directly between the checking-spring and locking-lever The latter 629,247 g V a is made, preferably, of flat steel and is secured a shoulder movable with said barrel, a check"- at its other end from the pivot on a screw 87, working in a slot38. The lever 34is provided with a finger 39, working in a slot 40, cut in the sleeve 4 immediatelybelow the slot 5. The said lever is also provided on its under side with a lug 41, (shown in dotted lines, Fig. 7, andlin full lines, Fig. 10,) having a recess thereinformingashoulder42. Pendingfrom the checking-pawl 10 is a hook-like projection 43, adapted to engage the shoulder .42, and thereby hold said pawl in its normal position in line with the shoulder 6. The lever 3% is maintained in a position to keep these elements in engagement by a spring 44. v In order to move the lever 34 to release the shoulder 42 from the book 43 to trip the pawl, I provide a wedge-shaped stud 45 in the slot 40, which engages the finger 39 and throws it backward immediately before the end of the checking-pawl strikes the shoulder 6, as in the device shown in Figs. 1 to 6. A small pivoted latch 45 is used to hold the lever in a retracted position when it is desired to dispense with a checking operation.

With the device described in the patent referred to the sleeve carrying the shoulder and resetting-cam is movably mounted with re spect to the barrel, and the checking-spring is connected to said sleeve. By carrying the sleeve or the resetting-cam rigidly on the barrel or with respect thereto and by mounting the checking-spring on one of the leaves I secure greater simplicity and increased efficiency. By also providing means whereby the checking mechanism may be disconnected, as

explained, I also materially increase the capacity of devices of this type.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a door-check, the combination with the two hinge-leaves, one of which carries a barrel, of a shoulder movable with said barre], a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf 'in a plane parallel with the closing'movement, and a spring for resisting said movement whereby an elastic checking action will take place, substantially as set forth.

2. In adoor-check,the combination with the two hinge-leaves one of which'carries a barrel, of a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring for resisting said movement wherebyan elastic checkingaction will take place, and means for automatically moving the checking-pawlout of the plane of said shoulder on there bound, substantially as set forth.

3. In a door-check,the combination with the hinge-leaves one of which carries'a barrel, of

of the plane of said shoulder on the rebound,

and means for resetting the pawlby the openingof the hinge-leaves, substantially as set forth.

4. Ina door-check,the combination with the.

two hinge-leaves one of which carriesa barrel, of a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring forresistin g said movement whereby an elastic checking action will take place, and a camsurface with which the pawl engages upon the opening of the leaves, and by which the pawl will be reset to again engage the shoulder upon the closing movement, substantially as set forth.

5. In adoor-check,the combination with the two hinge-leaves one of which carries a barrel, of a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement,and a leafspring carried by the movable leaf for resisting the movement of said pawl, said spring having sufficient play to allow of its buckling at the center, substantially as set forth.

6. In a door-check,the combination with the two hinge-leaves one of which carries abarrel, of a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring for resisting said movement whereby an elastic checking action will take place, and a lock ing-dog carried by the pawl and normally locking said pawl in a position to engage the shoulder, substantially as set forth.

7. In a door-check, the combination with the two hinge-leaves one of which carries a barrel,

of a shoulder movable with said barrel,a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring for rerebound the pawl will be moved out of its engagement with the shoulder to allow the closing of the door, substantially as set forth.

8. In a door-check, the combination with the two hinge-leaves one of which carries a barrel, of a shoulder movable with said barrel,a cheeking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closingmovement, a spring for resisting said movement whereby an elastic checking action will take place, a locking-dog carried by the pawl and normally locking said pawl in a position to engage the shoulder, means for releasing said locking-dog when the pawl engages the shoulder, whereby upon the rebound the pawl will be moved out of its engagement with the shoulder to allow the closing of the door, and means for automatically resetting the pawl and for resetting the looking-dog, substantially as set forth.

9. In a door-check, the combination of the two hinge-leaves one of which carries a barrel, of a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring for resisting said movement whereby an elas tic checking action will take place, a locking dog carried by the pawl and normally locking said pawl in a position to engage the shoulder, and an adjustable pin for resetting said locking-dog, said pin being movable with re spect to the locking-dog for the purpose mentioned, substantially as set forth.

10. In a door-check, the combination witl the two hingeleaves one of which carries a barrel, a shoulder movable with said barrel, a checking-pawl carried by the stationary leaf and adapted to engage said shoulder before the door is closed, said checking-pawl being movable with respect to its leaf in a plane parallel with the closing movement, a spring for resisting said movement whereby an elastic checking action will take place, a lockingdog carried by the pawl and normally looking said pawl in a position to engage the shoulder, and a latch for securing said locking-dog in its normal position, substantially as set forth.

This specification signed and witnessed this 15th day of September, 1898.

CHARLES F. HANINGTON.

lVitnesses:

FRANK L. DYER, JNo. R. TAYLOR. 

